I think I can bravely ignore the Freudian slip and solve this one.
-- If the mean of 5 tests is 90, then all 5 scores add up to (5 x 90) = 450
-- The sum of her first 4 scores is (95+ 90 + 85 + 95) = 365
-- If she has one more test to average 90, then she needs
to score (450 - 365) = <u>85</u> on it.
That looks like choice 'G '.
Answer:
(5,20)
Step-by-step explanation:
Because 3x+2(4x)=55 is then 11x=55, then divide the both by 11 to get x=5
The substitute y=4(5) because of x the get y=20
5x²+13x-4-17x²-7x+19+15x²+5x-21x-7=
=5x²+15x²-17x² +(13x-7x+5x-21x) -4-7+19=
=3x²-10x+8
Hmm idk.... I need like more info for this please so I can help you thank you byeeeee
That's 5 lengths for a three sided shape... Are you sure that is the instructions?
